From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <3AwTOXQQKDjgesUhaiiafY.WiggUeY-qcZc-ZUmnfcmnm.VoZZYlVfiUn.hYn@flex--kyan.bounces.google.com> Received: from mail-pl1-x64a.google.com (mail-pl1-x64a.google.com [IPv6:2607:f8b0:4864:20::64a]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 0702E3B2A4 for ; Thu, 14 Nov 2019 20:48:53 -0500 (EST) Received: by mail-pl1-x64a.google.com with SMTP id a11so5219154plp.21 for ; Thu, 14 Nov 2019 17:48:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc :content-transfer-encoding; bh=Rbei2+oM8vnqMHv68WAZb0gF0lJnVi4eBV36M8R5sZg=; b=u8pensdtnNKHBUpFoZ+V6IROjr8HjW/W9q3PFTGFh4vzZprnl7RRYz+3m5FlJdE+qS GO2Jv3OIgzga0RMH6tcQVVvVGSzwfO+TdaZ6BblGLfnWoNUYeTdwLzRIxiBMB72uZs/n DgI9SA3zZcSUXiunmGpFj9EiaP/yGRRC97S+nlHRB+OG/fBKnX4K2rObYfk/zwjUxDOx ZlC+ielmhlxQ867Z9mwhZbUKLYm015p+DECWjtlIyGsjcz2hmyx4tqhK6DKRsdy8gYec +DIVdtObPDW2h7JNpMbiGdFBsACV80xZWeWb20B2oJ6g3i8bPekEj7X4hBcabOobnubm 8kGA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc :content-transfer-encoding; bh=Rbei2+oM8vnqMHv68WAZb0gF0lJnVi4eBV36M8R5sZg=; b=U/tgmDQ0x5eFdCI08n5IYbPXXPvwFbEa1TfflJugyX7WYTBl2g6mLa65Dda4t0BN1P 8V0wqEKOmBfZVYUyptyUlSh5C+TkhS5IUztrPJkwQen4B2gLTX89eSCCA8IuJi8gRp4J z+8N5WVm7TWQjdjWhJXgHSMA/22XXCo9yn4nAW/OVhsU6kH14O/sAasGd3Bcf3VbJf8P JgdDMD2h+09YFrQkdG8kISaY1ig/FrtQWCS6Rb7aY+37D1jW1/HAbROKOuRLBwK8tTxg EGv/4xn3hlw453i1jyuBP1B1eKEnDCjgwXdtSSLs6SY35gITplF2WWauJbPyvjQEQpXo o5mA== X-Gm-Message-State: APjAAAUMGej82MosPH0H+IfzhVeJmTwNNxhaQ15JHx1VTn1J7LEBvQVR b2BvHLGqUweGhGWsMRk5t+/1FrUm X-Google-Smtp-Source: APXvYqzYah0lBHI4T8etq2dXjQOQdO6o90bYbvm5PG6GGdXVmIEnRde0aVtfkYtvyNZ95aVrwN03JEuh X-Received: by 2002:a63:4b52:: with SMTP id k18mr13103560pgl.394.1573782531887; Thu, 14 Nov 2019 17:48:51 -0800 (PST) Date: Thu, 14 Nov 2019 17:48:44 -0800 Message-Id: <20191115014846.126007-1-kyan@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.24.0.432.g9d3f5f5b63-goog From: Kan Yan To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, make-wifi-fast@lists.bufferbloat.net, toke@redhat.com, nbd@nbd.name, yiboz@codeaurora.org, john@phrozen.org, lorenzo@kernel.org, rmanohar@codeaurora.org, kevinhayes@google.com, Kan Yan Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: [Make-wifi-fast] [PATCH v8 0/2] Implement Airtime-based Queue Limit (AQL) X-BeenThere: make-wifi-fast@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Nov 2019 01:48:53 -0000 This patch series port the Airtime Queue Limits concept from the out-of-tre= e ath10k implementation[0] to mac80211. This version takes my patch to do the throttling in mac80211, and replaces the driver API with the mechanism from Toke's series, which instead calculated the expected airtime at dequeue tim= e inside mac80211, storing it in the SKB cb field. This version has been tested on QCA9984 platform. [0] https://chromium-review.googlesource.com/c/chromiumos/third_party/kerne= l/+/1703105/7 Changelog: v8: - Includes Toke's v7 version of "mac80211: Import airtime calculation cod= e from mt76" - Don't clobber sta's customized queue limit when configuring the default= via debugfs - Fix a racing condition when reset aql_tx_pending. v7: - Fix aql_total_pending_airtime underflow due to insufficient locking. v6: - Fix sta lookup in ieee80211_report_used_skb(). - Move call to ieee80211_sta_update_pending_airtime() to a bit later in __ieee80211_tx_status() v5: - Add missing export of ieee80211_calc_rx_airtime() and make ieee80211_calc_tx_airtime_rate() static (kbuildbot). - Use skb_get_queue_mapping() to get the AC from the skb. - Take basic rate configuration for the BSS into account when calculating multicast rate. v4: - Fix calculation that clamps the maximum airtime to fit into 10 bits - Incorporate Rich Brown's nits for the commit message in Kan's patch - Add fewer local variables to ieee80211_tx_dequeue() v3: - Move the tx_time_est field so it's shared with ack_frame_id, and use un= its of 4us for the value stored in it. - Move the addition of the Ethernet header size into ieee80211_calc_expec= ted_tx_airtime() v2: - Integrate Kan's approach to airtime throttling. - Hopefully fix the cb struct alignment on big-endian architectures. Kan Yan (1): mac80211: Implement Airtime-based Queue Limit (AQL) Toke H=C3=B8iland-J=C3=B8rgensen (1): mac80211: Import airtime calculation code from mt76 include/net/cfg80211.h | 7 + include/net/mac80211.h | 41 +++ net/mac80211/Makefile | 3 +- net/mac80211/airtime.c | 597 +++++++++++++++++++++++++++++++++++++ net/mac80211/debugfs.c | 85 ++++++ net/mac80211/debugfs_sta.c | 43 ++- net/mac80211/ieee80211_i.h | 8 + net/mac80211/main.c | 10 +- net/mac80211/sta_info.c | 38 +++ net/mac80211/sta_info.h | 8 + net/mac80211/tx.c | 47 ++- 11 files changed, 872 insertions(+), 15 deletions(-) create mode 100644 net/mac80211/airtime.c --=20 2.24.0.rc1.363.gb1bccd3e3d-goog